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STOCK-BASED COMPENSATION AND OTHER BENEFIT PLANS - Other Benefit Plans (Details) - USD ($)
12 Months Ended
Jan. 31, 2024
Jan. 31, 2023
Jan. 31, 2022
401(k) Plan and Other Retirement Plans      
Employee contribution limit (as a percentage of compensation) 60.00%    
Company's matching contribution as percentage of employee's annual compensation (as a percentage of compensation) 50.00%    
Matching contribution per employee maximum amount $ 2,000    
Matching contribution expense 2,500,000 $ 2,700,000 $ 2,600,000
Liability for Severance Pay      
Severance expenses $ 1,700,000 $ 1,600,000 $ 1,300,000